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Flowmeter in-situ calibration verification system

A technology for calibrating systems and calibrating gases, which is applied in the field of calibrating systems and can solve problems such as time-consuming and expensive processes

Inactive Publication Date: 2013-07-10
FLUID COMPONENTS INTERNATIONAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process is expensive and time consuming

Method used

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  • Flowmeter in-situ calibration verification system
  • Flowmeter in-situ calibration verification system
  • Flowmeter in-situ calibration verification system

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Embodiment Construction

[0049] The following description refers to the accompanying drawings, which form a part hereof and illustrate specific embodiments of the invention. It is to be realized by those skilled in this technological field that other embodiments may be utilized, and structural, electrical, and degree changes may be made, all without departing from the scope of the present invention.

[0050] refer to figure 1 , which shows a side view of a detector 10 according to an embodiment of the present invention. The probe 10 includes a thermal flow sensor 15 and a gas property sensor 20 . A flow sensor can be implemented using a pair of thermal devices such as a resistance temperature detector (RTD). In this figure, the flow sensor includes an RTD of which one is heated and is an active sensor element 25 , while the other RTD is a sensor element 30 that is substantially or substantially unheated.

[0051] In a typical setup, a gas mixture flows through the active and reference elements of t...

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Abstract

A flowmeter in-situ calibration verification system includes a tube or other conduit, a gas source, and a computational device. The tube has an end positioned relative to a flow sensor, and is in communication with the gas source. The tube and gas source introduce calibration gas into the tube at a repeatable mass flow. During a calibration operation, the conduit directs at least a portion of the calibration gas onto the flow sensor. The computational device is used to calculate an estimated flow rate of the calibration gas based upon the measurements obtained from the flow sensor.

Description

[0001] This application is a divisional application of the Chinese patent application with the application number 200510088991.4 and the invention name "Flowmeter Field Calibration Inspection System" submitted on August 4, 2005. technical field [0002] The invention relates to a calibration system, more specifically, to a field calibration and inspection system for a flowmeter. Background technique [0003] In the commercial and industrial measurement markets, thermal dissipation flowmeters are often chosen for flow measurement devices. A typical sensing element for such meters is a resistance temperature detector (RTD), the resistance of which is related to the temperature of the element itself. Typical sensors employ at least two RTD elements. One of the RTD elements is used as a reference element and is normally not heated. A second RTD is used as the active element for heating. In use, the effect of heating the flow on the RTD element can be used to measure the flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 埃里克·J·威布尔
Owner FLUID COMPONENTS INTERNATIONAL